These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
To put it in context, Yudetamago has spent more time on this single tournament arc than any other arc they've done, including arcs from the original Kinnikuman. Which is sad, really, considering that they were pretty good at avoiding this trope.
Technically speaking, the Tag Arc is its own series
Even so, the same storyline has been going on for six years.
Boring Invincible Villains: Thunder and Lightning. They've gone through almost the entire tag arc only being mildly inconvenienced by the heroes with the sole exception of Geronimo of all people destroying their bell. Even other, very strong villains are jobbing to them!
In the finals, this has been apparently subverted in the case of Thunder of having serious Hidden Depths since we get a load of his Freudian Excuse to explain why he was evil due to him being the result of his father raping his mother. Nothing for Lightning though
Ear Worm: With my rice I like to have some cow cow cow/ Tastes so very good I don't care how how how...
"Ga-ga-gan ga-ga gan (Do the Muscle!) Zu-ba-ba ba-ba ban (Hustle Muscle!)"
Ensemble Darkhorse: Kevin Mask, Checkmate, Mars, Bone Cold are popular despite their short appearances
Family-Unfriendly Aesop: Ricardo's story and the Demon Seeds arc seem to have the message that you're either born good or born evil, and going against it is impossible.
Germans Love David Hasselhoff: The anime wasn't very popular in Japan, but became ridiculously so in America. One-shot villain Puripuriman/Monseuir Cheeks is also popular in America, to the point that he was used as Mr. Exposition throughout the remainder of the dub after his only appearance in the show proper.
The anime was so popular in America that another season (cover the Choujin Olympics Revival) was commissioned by 4Kids.
Hilarious in Hindsight: Anyone who's read the original series might find it funny that Kevin Mask constantly switches sides, since Robin Mask had a habit doing so in the first seriesnote Though admittedly, not as much as Kevin.
Internet Backdraft: Known as "The Kinnikuman Incident". Fans were not pleased at the fact that Akira Kamiya did not reprise his role as Kinnikuman in this series. It got worse when in an interview, Kamiya himself said that he wasn't even offered the role.
Jerkass Woobie: In the Ultimate Choujin Tag Arc, it is Thunder of all people as in his backstory, he discovers that the reason why his mother was scared of him when he was a kid was because his father, a Time Choujin like him, attacked his home village and even raped his mother which explains why he was born! This caused him to run away from home crying. You got to feel sorry for the guy.
Nightmare Fuel: Hydrazoa can impale his enemies with his vertebrae, Hanzo cuts people's faces off and there's Bone Cold's technique of causing the ribcage to shoot out of his enemies.
No Problem with Licensed Games: Both games released in America for the GameCube and Playstation 2 respectively are considered very fun wresting games with good controls and a great selection of characters. Some consider them the best wrestling games ever made.
The Scrappy: Terry the Kid. Not only a great deal of most of his moves basically Terryman's moves, which are already criticized for being lame, he also tries to deny the fact that he's nothing like Terryman and that he performs the moves at different angles and timing, which isn't fooling anybody.
Strawman Has a Point: Anybody who's read Kinnikuman would agree with the old Choujin that Mantarou is completely out of line for assuming that Suguru's fights were fixed. But then, you learn that after the last arc in the original series, Suguru annulled his fight records and burnt every video of his fights. The only photographs of him left was when he was still a complete coward, so combining with the fact that Suguru became a Bumbling Dad when Mantarou was born, it's not hard to see why Mantarou thought his father fixed his fights.
Superlative Dubbing: Believe it or not, 4Kids did remarkably well with this show, since the goofy, over-the-top voice acting and Hurricane of Puns fit the tone of the show perfectly (After all, the series is an action-comedy, whose origins are from a manga that was originally a gag manga). It's commonly cited as one the few anime that 4Kids managed to not screw up.
So Bad, It's Good: On the other hand, just like with the Spanish dub of the prequel, the series was dubbed in Colombia (a country when Professional Wrestling is not very popular to being with it, compared with Mexico) and it suffers for it, although this is justified, as 4Kids were unable to dub it in Mexico (compared with their other series they dubbed before) due to budget constrains.note Dubbing in Mexico is more expensive than dubbing in Colombia and other South American countries.